Body

The human body is a complex machine composed of billions of cells. It is divided into several major systems, each with specific functions:

Muscular System: Provides movement, support, and heat generation.
Skeletal System: Provides structure, support, and protection for organs.
Circulatory System: Transports blood, oxygen, and nutrients throughout the body.
Respiratory System: Exchanges oxygen and carbon dioxide between the body and the environment.
Digestive System: Breaks down food into nutrients and absorbs them into the bloodstream.
Nervous System: Controls and coordinates all body functions.
Endocrine System: Produces hormones that regulate body processes.
Urinary System: Filters waste products from the blood and excretes them as urine.
Integumentary System: Protects the body from injury and regulates temperature.
Reproductive System: Enables the production of offspring.